It's:
Top Bun
Bacon
Mayo (gross)
Cheese
Hamburger Patty
Onion
Tomato
Lettuce
Bottom Bun
Flipping it over wouldn't help. It should be:
Top Bun
Onion
Tomato
Lettuce
Bacon
Cheese
Hamburger Patty
Bottom Bun
Whatever. At least the cheeseburger is fixable.